SPI ARDMS EXAM QUESTIONS AND CORRECT ANSWERS
|2026/2027 UPDATED |GUARANTEED PASS.
which of the following is an effect on Focusing? **
A. Improved lateral resolution
B. Improved axial resolution
C. Increased beam divergence in the near zone
D. Higher Frequency - Answer -A
Range of frequencies produced by the transducer: ** - Answer -Bandwidth
Technique that permits "virtual palpation" of a lesion to determine the hardness or softness of
tissue: ** - Answer -Elastography
What is chosen to improve transmission into the body. ** - Answer -acoustic impedance of
matching layer
If the amount of damping decreases, the bandwidth: ** - Answer -Decreases
The region where the sound beam is the smallest is referred to as:** - Answer -Focus
1|Page
, The near zone length is determined by: ** - Answer -Transducer frequency (element freq &
diam)
Is only used for spectral doppler: - Answer -2 element cw trans
wave's initial intensity is 2mW/cm squared. there is an increase of 10dB, what is the final
intensity - Answer -20mW/cm squared
what is the name of the control that compensates for attenuation related to path length? ** -
Answer -Time-gain compensation
What portion of the ultrasound system drives the transducer - Answer -Pulser
what doppler mode uses amplitude of doppler shift in order to produce an image
demonstrating flow in a vessel? ** - Answer -Power Doppler (note: but not shift itself)
How many shades of gray can the human eye distinguish? - Answer -100
Current ultrasound systems have ______ shades of gray available - Answer -256
2|Page
|2026/2027 UPDATED |GUARANTEED PASS.
which of the following is an effect on Focusing? **
A. Improved lateral resolution
B. Improved axial resolution
C. Increased beam divergence in the near zone
D. Higher Frequency - Answer -A
Range of frequencies produced by the transducer: ** - Answer -Bandwidth
Technique that permits "virtual palpation" of a lesion to determine the hardness or softness of
tissue: ** - Answer -Elastography
What is chosen to improve transmission into the body. ** - Answer -acoustic impedance of
matching layer
If the amount of damping decreases, the bandwidth: ** - Answer -Decreases
The region where the sound beam is the smallest is referred to as:** - Answer -Focus
1|Page
, The near zone length is determined by: ** - Answer -Transducer frequency (element freq &
diam)
Is only used for spectral doppler: - Answer -2 element cw trans
wave's initial intensity is 2mW/cm squared. there is an increase of 10dB, what is the final
intensity - Answer -20mW/cm squared
what is the name of the control that compensates for attenuation related to path length? ** -
Answer -Time-gain compensation
What portion of the ultrasound system drives the transducer - Answer -Pulser
what doppler mode uses amplitude of doppler shift in order to produce an image
demonstrating flow in a vessel? ** - Answer -Power Doppler (note: but not shift itself)
How many shades of gray can the human eye distinguish? - Answer -100
Current ultrasound systems have ______ shades of gray available - Answer -256
2|Page
